diff --git a/Dockerfile b/Dockerfile
index 531d7fa..85a9725 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ RUN apt update \
     && apt upgrade -y \
     && apt install -y lib32gcc1 lib32stdc++6 unzip curl iproute2 libgdiplus \
     && curl -sL https://deb.nodesource.com/setup_6.x | bash - \
-    && apt install -y nodejs \
+    && apt install -y nodejs npm \
     && mkdir /node_modules \
     && npm install --prefix / ws \
     && useradd -d /home/container -m container